90388068 has 24 divisors (see below), whose sum is σ = 220075968. Its totient is φ = 28819296.

The previous prime is 90388061. The next prime is 90388069. The reversal of 90388068 is 86088309.

It is not an unprimeable number, because it can be changed into a prime (90388061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163471 + ... + 164022.

It is an arithmetic number, because the mean of its divisors is an integer number (9169832).

Almost surely, 2^90388068 is an apocalyptic number.

It is an amenable number.

90388068 is an abundant number, since it is smaller than the sum of its proper divisors (129687900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90388068 is a wasteful number, since it uses less digits than its factorization.

90388068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327523 (or 327521 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90388068 is about 9507.2639597310. The cubic root of 90388068 is about 448.7836584236.

The spelling of 90388068 in words is "ninety million, three hundred eighty-eight thousand, sixty-eight".